Th is study explores the eff ects of information technology (IT) in terms of longitudinal changes in organizational structures at the central government level. Interestingly, although IT has increased the ratio of middle managers to subordinates, the number of middle managers has not changed radically and, in some cases, has steadily increased, while the proportion of lower-level employees has decreased. Contrary to the belief in a pyramid structure, the actual form of an agency looks like a rocket. Th e analysis shows that IT eff ects on the agency’s morphology diff er according to the core technology of the agency. However, these eff ects seem to be constrained by the rigidity of the Korean government in terms of organizational management. Th is article proposes that agency autonomy in fi tting the organizational structure to the real work situation is a necessary condition for seeing the full eff ects of e-government